Dynamic Content in Email Campaigns: How It Works

Date: 2026-06-19 | Time of reading: 9 minutes (1755 words)

Modern consumers receive dozens of promotional emails in their inboxes every day, so mass email campaigns with the same content for everyone no longer make an impression. Audiences expect a personal approach — emails that address them by name, take the recipient’s interests into account, and offer relevant products. Dynamic content is behind all of this. It is a way to make each email unique for a specific recipient by automatically inserting elements based on their data and behavior.

How can you set up dynamic content in email campaigns quickly and easily? Here, we explain how it works in Altcraft’s unified marketing management center.

Below, we’ll look at what dynamic content in email campaigns is, why modern email campaigns lose effectiveness without it, how it works, and how to add it to your campaign.

What Is Dynamic Content in Email Campaigns

Dynamic content refers to email elements that automatically change at the moment of sending. The personalization system inserts up-to-date data about each customer, so different recipients see different content within the same campaign.

The simplest example of dynamic content is addressing a subscriber by name: instead of the impersonal “Hello, customer,” the email will say “Hello, Irina.” But personalization is not limited to names. An email can show products that a user left in their cart, recommend accessories for a recent purchase, or remind them about items they viewed on the website.

Dynamic content is based on customer data from your customer database: age, gender, location, interests, purchase history, activity in previous emails, and much more. Any information you store about a subscriber can be used for personalization. For example, if you know the user’s city, you can show them current offers for their region; if you have data on past purchases, you can easily recommend related products.

How can you protect customer databases? How should you store them properly? We covered this here.

Why Dynamic Content Is Essential

Simply sending the same marketing communications to everyone no longer works — if an email does not bring value to the recipient personally, they are likely to ignore or delete it. Research shows that 71% of consumers feel frustrated when they receive irrelevant messages, while 76% get annoyed when a brand does not offer a personalized experience. At the same time, personalization really increases effectiveness: emails tailored to the user get around 29% more opens and 41% more clicks than regular emails.

Where should you store all this customer data for personalization? Here, we explain how it works on the Altcraft platform.

Personalization affects key metrics. For example:

Emails that address the recipient personally are opened more often — personalizing the subject line or using the recipient’s name in the email increases the open rate.
Personalized campaigns generate noticeably more clicks and engagement compared to regular campaigns.
Personalized emails more often lead to purchases and repeat orders: users tend to return to brands that offer relevant content.
Personalization increases loyalty: subscribers see that the brand understands their preferences, so they unsubscribe less often.
Dynamic content also saves time: there is no need to create separate emails for each segment. One template is enough, with blocks that change for different groups.

It responds to user behavior: viewed a product — receive a selection of similar items; placed an order — get related purchase suggestions; showed interest in a category — receive new arrivals.

How Dynamic Content Works

How does dynamic content work in emails? The service identifies the recipient by their email, pulls data from a unified database, and inserts the required elements into the template according to the specified logic: variables such as name, city, or company; conditional blocks based on gender, segment, or activity; lists of products or news items through loops; and up-to-date information from external sources such as product feeds or APIs. All of this is increasingly configured through visual editors, where marketers set display rules for blocks without code.

For dynamic content to work, an email needs logic that inserts the right blocks for each recipient. Modern services do this through templates, conditions, loops, and external data connections.

The system identifies the recipient by a unique identifier, usually an email address, and retrieves the related data from the database.

It is critical that the data is collected in one place and kept up to date. If the information is scattered across different systems, it is better to combine it in a CRM or CDP — then the template can retrieve everything at once before sending.

The main mechanisms for dynamically filling emails can be divided into several categories:

Variables. This is the basic personalization tool. Special placeholders, or variables, are inserted into the email template and replaced with values from the database when the email is sent. For example, the {{user.name}} variable inserts the recipient’s name, {{user.city}} inserts their city, and {{user.company}} inserts the company name. Variables can be used in the email body, subject line, links, image attributes — almost any element. The key point is that the relevant data must be available to the system when the email is generated; otherwise, the substitution will not happen and the variable will remain empty.
Conditions. Logical operators are used to control what the recipient sees in the email. One banner can be shown to men, another to women. You can take into account customer status, activity, and segment. As a result, different people receive the same email, but with different content. Conditions can easily be combined with variables and loops: one recipient may get a discount block if they have not bought anything for a long time, while VIP customers may see a selection of products from a relevant category.
Loops. Loops in emails are used to automatically display lists of different lengths. There is no need to manually code three product cards — the template simply goes through the data array and builds the blocks itself. For example, if the service sends a list of five recommendations, the email will show five cards with a name, image, and price. This is how selections of products, news, reviews, or transactional data are created, with the number of items changing for each user.
External data. An even more advanced level is loading content from external sources — files or APIs — right when the email is sent. This means you can always show the most up-to-date information. Product feeds are used most often: using a product catalog in XML/YML or JSON format, the system automatically inserts current items and prices into the email directly from your website or database. Since the data is loaded from an external source at the moment of sending, it remains up to date in the campaign. For example, if the price on the website changes, the email will already contain the new price. Similarly, you can connect fresh blog posts, product stock levels, exchange rates, weather, or any other content where relevance matters to the recipient. With external data, your emails do not become “outdated” and contain only fresh, relevant information at the moment of opening.

It is worth noting that all of the above can be implemented even without programming skills — modern email campaign services aim to simplify a marketer’s work. Many platforms offer visual editors and ready-made widgets for dynamic content. For example, in an email builder, you can select a specific block and set a display condition: “show this block if the recipient’s city = Sydney.” The system will automatically apply this rule when sending.

How to Create an Email Campaign with Dynamic Content

How do you create an email campaign with dynamic content in practice? First, collect and organize customer data in one system. Then, set up an email template with variables and dynamic blocks. Next, connect automatic selections of products or content from a catalog. After that, thoroughly test the emails on different customer types. Finally, launch the campaign and compare its metrics with regular campaigns.

Step 1. Data. Collect the necessary customer information in the system: gender, city, size, interests, and purchase history. In Altcraft CDP, for example, custom fields are available for this. It is important that the data is stored in one database and kept up to date; otherwise, personalization simply will not work.

Step 2. Template. Next, open the email template in the editor and insert dynamic elements instead of static content. In Altcraft, this is done through the built-in template language: just add a variable to the text, and when the email is sent, the platform will replace it with a value from the recipient’s profile. For example, if you add the greeting {{lead.first_name}} to the email text, Anna will receive a personal “Hello, Anna!” and Stephen will receive “Hello, Stephen!” if these names are stored in your database. Similarly, you can insert any collected data into email fields: city, company name, date of last purchase, and so on.

Step 3. Content Selections. To create automatic lists of products or news items, connect an external data source. Altcraft has the “Market” module for working with catalogs and orders: you upload a catalog, for example in YML or JSON, and the platform selects and displays the required items in the email according to the specified rules, such as quantity, brand, price, and others. The marketer does not need to manually create these blocks every time.

Step 4. Test. Before launch, send test emails to yourself and your colleagues. Check the preview “through the eyes” of different customer types: new, active, and VIP. Make sure there are no empty fields and that a neat default text appears wherever data is missing.

Step 5. Launch and Analysis. After checking everything, launch the campaign. The system creates a separate email for each recipient. Then review the metrics: opens, clicks, conversions, and unsubscribes, and compare them with regular campaigns.

Conclusion

Dynamic content in an email campaign is the automatic insertion of different blocks and values for different recipients based on their data and behavior. It increases open rates and click-through rates, boosts conversions, and reduces manual work with templates. If you do not use personalization yet, start with a basic set: name, city, segment, one or two simple conditions in the template, and several trigger emails, such as abandoned cart, post-purchase, and reactivation emails. Then connect data from a CRM or CDP, add dynamic product or content selections, and regularly compare your scenarios against campaign metrics.